Quasicrystals and nano-quasicrystals in annealed ZrAlNiCuAg metallic glasses

被引：14

作者：

Chen, MW

Inoue, A

Zhang, T

Sakai, A

Sakurai, T

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Kyoto Univ, Mesoscop Mat Res Ctr, Kyoto 6068501, Japan

来源：

INTERMETALLICS | 2000年 / 8卷 / 5-6期

关键词：

phase transformations; nanocrystals; rapid solidification processing; microstructure; electron microscopy transmission;

D O I：

10.1016/S0966-9795(99)00144-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Quasicrystals and nano-quasicrystals are observed in annealed Zr65Al7.5Ni10Cu12.5Ag5 and Zr65Al7.5Ni10Cu7.5Ag10 metallic glasses. Through systematic transmission electron microscopy (TEM) analyses, selected area electron diffraction (SAED) and nanobeam electron diffraction (NBED) patterns corresponding to five-, three- and twofold rotational symmetry are obtained, demonstrating that the precipitated phases in the first stage devitrification of the alloys are icosahedral quasicrystalline phases. The discovery of the quasicrystals directly reflects the intrinsic relationship between the Zr-based bulk metallic glasses and the icosahedral structure. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：493 / 498

页数：6

共 20 条

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[Anonymous], SOLID STATE PHYS

[2]

Chen M., UNPUB

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